Hey D Coates! Thanks for the great plans for the nuc/swarm catcher box! I actually made eight of them last Friday. I accidently bought a sheet of 3/8 (11/32") plywood and cut everything out - then realized my mistake. I had a few pieces of scrap 15/32" plywood laying around so I made the end pieces out of these, used the 3/8" sides, bottom, and top pieces and the frames fit perfectly! I still had half a day left and I was so inspired and pleased with my four 'mistake boxes' that I went back to Lowes and bought a sheet of 15/32" and made four more boxes in just under three hours. Not a bad day's work (or fun) and I now have eight swarm traps ready for painting for a total expense of less than $40.00, including glue and brads. I used 1-1/4" brads and my brad nailer to hold stuff together while the Titebond III glue dried. I have some medium brown Behr exterior latex enamel left over from another job that I intend to use on them before putting them out. Your measurements were "Dead On" and no adjustments were necessary when assembling them.
Thanks again for sharing.